EP 3995330 B1 20231129 - PRESSURE MAINTAINING VALVE FOR AN AIR SPRING AND AIR SPRING COMPRISING THE PRESSURE MAINTAINING VALVE
Title (en)
PRESSURE MAINTAINING VALVE FOR AN AIR SPRING AND AIR SPRING COMPRISING THE PRESSURE MAINTAINING VALVE
Title (de)
DRUCKHALTEVENTIL FÜR EINE LUFTFEDER UND LUFTFEDER UMFASSEND DAS DRUCKHALTEVENTIL
Title (fr)
SOUPAPE DE MAINTIEN DE PRESSION POUR UN RESSORT PNEUMATIQUE ET RESSORT PNEUMATIQUE COMPRENANT LA SOUPAPE DE MAINTIEN DE PRESSION
Publication
Application
Priority
DE 102020129491 A 20201109
Abstract (en)
[origin: CN114458716A] The present invention relates to a pressure holding valve for an air spring and an air spring comprising the same, the pressure holding valve comprising: a first valve body in an opening of the air spring, the first valve body having an inlet; the second valve body is connected with the first valve body and comprises a cavity which is in fluid communication with the inlet and is provided with at least one side outlet; the reset piece is used for providing pre-tightening force towards the inlet and is arranged in the cavity outside the inlet; a closure member within the chamber, which is moved from a closed state to an open state against the preload; the actuating device is provided with a head part, a rod part extending from the head part and at least one flow channel extending from the head part at least partially along the rod part, the head part is arranged outside the inlet and is provided with a diameter larger than that of the inlet, and the rod part can enter the cavity through the inlet; the actuating means moves the closure member out of the closed state when a force acting counter to the pretightening force moves the actuating means with the stem from the inlet to the cavity. The invention provides a pressure maintaining valve which is low in cost and saves space.
IPC 8 full level
B60G 17/052 (2006.01)
CPC (source: CN EP US)
B60G 17/0528 (2013.01 - EP); F16F 9/02 (2013.01 - CN EP); F16F 9/34 (2013.01 - CN US); F16F 9/43 (2013.01 - EP); F16K 15/026 (2013.01 - US); F16K 27/02 (2013.01 - EP); F16K 27/0209 (2013.01 - EP US); B60G 2206/7104 (2013.01 - EP); B60G 2206/81012 (2013.01 - EP); B60G 2500/2042 (2013.01 - EP); F16L 37/098 (2013.01 - EP); F16L 37/40 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102020129491 B3 20220113; CN 114458716 A 20220510; EP 3995330 A1 20220511; EP 3995330 B1 20231129; US 2022146005 A1 20220512
DOCDB simple family (application)
DE 102020129491 A 20201109; CN 202111307162 A 20211105; EP 21201006 A 20211005; US 202117518861 A 20211104